feat(di): introduced @NgInjectableService to make di codegen easier

Author: pavelgj

lib/core/directive.dart

@@ -418,6 +418,7 @@ abstract class NgDetachAware {
   void detach();
 }
 
+@NgInjectableService()
 class DirectiveMap extends AnnotationMap<NgAnnotation> {
   DirectiveMap(Injector injector, MetadataExtractor metadataExtractor,
       FieldMetadataExtractor fieldMetadataExtractor)
@@ -445,6 +446,7 @@ class DirectiveMap extends AnnotationMap<NgAnnotation> {
   }
 }
 
+@NgInjectableService()
 class FieldMetadataExtractor {
   List<TypeMirror> _fieldAnnotations = [reflectType(NgAttr),
       reflectType(NgOneWay), reflectType(NgOneWayOneTime),

lib/core/exception_handler.dart

@@ -7,6 +7,7 @@ part of angular.core;
  * In your application it is expected that this service is overridden with
  * your implementation which can store the exception for later processing.
  */
+@NgInjectableService()
 class ExceptionHandler {
 
  /**

lib/core/filter.dart

@@ -37,6 +37,7 @@ class NgFilter {
 /**
  * Registry of filters at runtime.
  */
+@NgInjectableService()
 class FilterMap extends AnnotationMap<NgFilter> {
   Injector _injector;
   FilterMap(Injector injector, MetadataExtractor extractMetadata) : super(injector, extractMetadata) {

lib/core/interpolate.dart

@@ -34,6 +34,7 @@ class Interpolation {
  *     var exp = $interpolate('Hello {{name}}!');
  *     expect(exp({name:'Angular'}).toEqual('Hello Angular!');
  */
+@NgInjectableService()
 class Interpolate {
   final Parser _parse;
 

lib/core/module.dart

@@ -11,6 +11,8 @@ import 'package:perf_api/perf_api.dart';
 import 'package:angular/core/parser/parser_library.dart';
 import 'package:angular/utils.dart';
 
+import 'service.dart';
+export 'service.dart';
 
 part "cache.dart";
 part "directive.dart";

lib/core/parser/backend.dart

@@ -24,6 +24,7 @@ class Expression implements ParserAST {
   get assignable => assign != null;
 }
 
+@NgInjectableService()
 class GetterSetter {
   static stripTrailingNulls(List l) {
     while (l.length > 0 && l.last == null) {
@@ -87,6 +88,7 @@ class GetterSetter {
 
 var undefined_ = const Symbol("UNDEFINED");
 
+@NgInjectableService()
 class ParserBackend {
   GetterSetter _getterSetter;
   FilterMap _filters;

lib/core/parser/lexer.dart

@@ -1,5 +1,6 @@
 part of angular.core.parser;
 
+@NgInjectableService()
 class Lexer {
   static const String QUOTES = "\"'";
   static const String DOT = ".";

lib/core/parser/parser.dart

@@ -133,6 +133,7 @@ Map<String, Operator> OPERATORS = {
   '?': (s, l, c, t, f) => toBool(c.eval(s, l)) ? t.eval(s, l) : f.eval(s, l),
 };
 
+@NgInjectableService()
 class DynamicParser implements Parser {
   final Lexer _lexer;
   final ParserBackend _b;

lib/core/parser/static_parser.dart

@@ -6,6 +6,7 @@ class StaticParserFunctions {
   Map<String, dynamic> functions;
 }
 
+@NgInjectableService()
 class StaticParser implements Parser {
   Map<String, dynamic> _functions;
   Parser _fallbackParser;

lib/core/registry.dart

@@ -39,6 +39,7 @@ abstract class AnnotationMap<K> {
   }
 }
 
+@NgInjectableService()
 class MetadataExtractor {
 
   Iterable call(Type type) {